Results 51 to 60 of about 1,864 (196)

What can lithics tell us about hominin technology's ‘primordial soup’? An origin of stone knapping via the emulation of Mother Nature

open access: yesArchaeometry, Volume 68, Issue S3, Page S8-S30, June 2026.
Abstract The use of stone hammers to produce sharp stone flakes—knapping—is thought to represent a significant stage in hominin technological evolution because it facilitated the exploitation of novel resources, including meat obtained from medium‐to‐large‐sized vertebrates. The invention of knapping may have occurred via an additive (i.e., cumulative)
Metin I. Eren   +23 more
wiley   +1 more source

Soroprevalência da infecção leptospiral em capivaras (Hydrochoerus hydrochaeris) abatidas em um frigorífico do Rio Grande do Sul Seroprevalence of leptospiral infection in capybaras (Hydrochoerus hydrochaeris) in a slaughterhouse of Rio Grande do Sul, Brazil

open access: yesPesquisa Veterinária Brasileira, 2009
Capivaras (Hydrochoerus hydrochaeris) são roedores selvagens do continente americano com crescente importância comercial como fonte alternativa de carne para o consumo humano.
Éverton F. Silva   +5 more
doaj   +1 more source

Anuran Assemblage Structure in the Serra Da Capivara National Park, Piauí State, North‐Eastern Brazil

open access: yesAustral Ecology, Volume 51, Issue 4, April 2026.
ABSTRACT Biological communities consist of species that coexist and interact with each other and the environment over the same spatial and temporal scales. How species use the available resources can shape community structure, particularly in mechanisms that favour species coexistence, such as niche partitioning. This study investigated the spatial and
Nayla Letícia Assunção Rodrigues   +4 more
wiley   +1 more source

New tick records in Rondônia, Western Brazilian Amazon Novos relatos de carrapatos em Rondônia, Amazônia ocidental brasileira

open access: yesRevista Brasileira de Parasitologia Veterinária, 2010
In the present study, we provide new tick records from Vilhena Municipality, in the Southeast of the State of Rondônia, Northern Brazil. Ticks collected from a capybara, Hydrochoerus hydrochaeris (Linnaeus), were identified as Amblyomma romitii Tonelli ...
Marcelo Bahia Labruna   +4 more
doaj   +1 more source

Quaternary deposits in the Serra da Capivara National Park and surrounding area, Southeastern Piauí state, Brazil [PDF]

open access: yesGeologia USP. Série Científica, 2012
Serra da Capivara National Park and surrounding areas in Southeastern Piau State (Brazil) were subjected to morphostratigraphical, sedimentological, and geochronological studies about superficial deposits in order to interpret quaternary ...
Kenitiro Suguio   +2 more
doaj   +1 more source

The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)

open access: yesSedimentology, Volume 73, Issue 3, Page 802-837, April 2026.
ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti   +5 more
wiley   +1 more source

Trends in Medicinal Uses of Edible Wild Vertebrates in Brazil

open access: yesEvidence-Based Complementary and Alternative Medicine, Volume 2017, Issue 1, 2017., 2017
The use of food medicines is a widespread practice worldwide. In Brazil, such use is often associated with wild animals, mostly focusing on vertebrate species. Here we assessed taxonomic and ecological trends in traditional uses of wild edible vertebrates in the country, through an extensive ethnobiological database analysis. Our results showed that at
Rômulo Romeu Nóbrega Alves   +3 more
wiley   +1 more source

Taxonomic treatment, geographic distribution and preliminar conservation status of Croton sect. Barhamia subsect. Barhamia (Euphorbiaceae) in Brazil

open access: yesNordic Journal of Botany, Volume 2026, Issue 3, March 2026.
The genus Croton (Euphorbiaceae) is an exceptionally megadiverse genus, encompassing roughly 1200 species that are predominantly distributed across tropical regions globally. For the New World, the genus is organized into three subgenera (Adenophylli, Geiseleria and Quadrilobi) and 31 sections, with C. sect. Barhamia standing out with its approximately
Nicolas Giovanny Burilli   +2 more
wiley   +1 more source

Reproductive Dynamics of Iheringichthys labrosus (Lütken, 1874) (Teleostei, Pimelodidae), in the Capivara Reservoir, Paranapanema River, Parana, Brazil

open access: yesDataset Papers in Science, Volume 2013, Issue 1, 2013., 2013
To study the reproductive dynamics of the mandi‐beiçudo, Iheringichthys labrosus, in the Capivara Reservoir, Paranapanema River, Parana, Brazil, specimens were captured trimonthly from March 2001 to July 2004 at four sampling sites. The sex ratio showed a predominance of females in most of months sampled and the larger length classes.
Fábio Mineo Suzuki   +4 more
wiley   +1 more source

Uma descrição do Parque Nacional Serra da Capivara, Piauí: um estudo de caso

open access: yes, 2021
The present work aims to make a description of the Serra da Capivara National Park, taking into account the geological, geomorphological, hydrographic, climatic, relief, fauna, vegetation, flora, paleofauna and paleoclimate aspects.
Oliveira, Gabriel Frechiani de
core  

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